CN214171205U

CN214171205U - Vibration damper for intelligent suspension

Info

Publication number: CN214171205U
Application number: CN202120076406.3U
Authority: CN
Inventors: 税永波; 余瑶; 邓金山
Original assignee: Chongqing Technology and Business Institute Chongqing Radio and TV University
Current assignee: Chongqing Technology and Business Institute Chongqing Radio and TV University
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-09-10
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a shock absorber for intelligent suspension, including an oil storage cylinder, a guide component, a piston component and a connecting rod, the guide component is arranged at the opening end of the oil storage cylinder, the piston component is slidably arranged in the oil storage cylinder, and the connecting rod can telescopically pass through the guide component and is fixedly connected with the piston component; a slidable floating piston is further arranged in the oil storage cylinder and is positioned on one side, away from the connecting rod, of the piston assembly; the electromagnetic floating piston is characterized in that the floating piston is made of magnetic steel with permanent magnetism, an annular electromagnet is fixedly sleeved on the oil storage cylinder, and the electromagnet is axially positioned on one side of the floating piston, so that the acting force of the electromagnet on the floating piston in the electrified state faces the piston assembly. The utility model has the advantages of structural design is reasonable, and it is convenient to adjust, can adjust damping performance etc.

Description

Vibration damper for intelligent suspension

Technical Field

The utility model relates to a vehicle suspension technical field, very much relate to a shock absorber for intelligent suspension.

Background

Vibration dampers (Vibration dampers) are mainly used to damp the shock when the springs absorb shock and then rebound and the impact from the road surface. When the road surface passes through the uneven road surface, although the shock absorption spring can filter the shock of the road surface, the spring per se can still do reciprocating motion, and the shock absorber is used for inhibiting the shock generated by the reciprocating motion of the shock absorption spring per se. A hydraulic shock absorber is generally adopted in an automobile suspension system, a piston rod can reciprocate in a working cylinder in the working process of the shock absorber, and oil in an oil storage cylinder generates damping force through a valve system. In order to take account of the area difference between the rod cavity and the rodless cavity and ensure the smooth movement of the piston rod, gas needs to be injected into the rod cavity, and in order to avoid the direct release of oil and gas, the Chinese patent document also discloses an oil-gas separation type single-cylinder shock absorber, the publication number of which is CN201027882, and the floating piston is arranged in the oil storage cylinder to separate the oil and the gas in the oil storage cylinder. When the piston rod is stretched, oil in the rod cavity flows into the oil storage cylinder, and the floating piston moves along with the piston under the action of gas pressure because the oil flowing into the rod cavity cannot fill the moving space of the piston, so that the volume of the gas cavity is increased. When the piston rod contracts, oil in the oil storage cylinder enters the rod cavity, but equal-volume exchange of oil cannot be realized due to the difference of areas of two sides of the piston, and the floating piston in the oil storage cylinder needs to compress gas under the pressure of the oil in the oil storage cylinder. It can be seen that the shock absorber of this construction can vary the performance (softer or harder) of the shock absorber by adjusting the pressure of the gas in the reservoir acting on the floating piston.

However, the injection amount of the gas in the oil storage cylinder cannot be changed in the driving process, so that the acting force of the floating piston cannot be adjusted according to different road conditions.

Disclosure of Invention

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a structural design ingenious, can change the effort that acts on floating piston, the shock absorber for intelligent suspension of adjustable shock absorber performance.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a shock absorber for an intelligent suspension comprises an oil storage cylinder, a guide assembly, a piston assembly and a connecting rod, wherein the guide assembly is arranged at the opening end of the oil storage cylinder, the piston assembly is slidably arranged in the oil storage cylinder, and the connecting rod can telescopically penetrate through the guide assembly and is fixedly connected with the piston assembly; a slidable floating piston is further arranged in the oil storage cylinder and is positioned on one side, away from the connecting rod, of the piston assembly; the electromagnetic floating piston is characterized in that the floating piston is made of magnetic steel with permanent magnetism, an annular electromagnet is fixedly sleeved on the oil storage cylinder, and the electromagnet is axially positioned on one side of the floating piston, so that the acting force of the electromagnet on the floating piston in the electrified state faces the piston assembly.

In the structure, the electromagnet generates magnetic force after being electrified, and the floating piston made of permanent magnetic steel also has magnetic force, so that the permanent magnetic steel and the floating piston generate mutual attraction or mutual repulsion force in the axial direction. Because the electromagnet is fixedly arranged on the oil storage cylinder, and the floating piston is slidably arranged in the oil storage cylinder, the floating piston can transmit acting force to the connecting rod by extruding oil between the piston assembly and the floating piston under the action of magnetic force, and the rigidity of the shock absorber can be changed. In addition, because the magnetic force of the electromagnet can be changed through current, in the structure, the rigidity of the shock absorber can be changed by controlling the current of the electromagnet, so that the shock absorber is softer or harder, and the shock absorber is suitable for different road conditions.

Preferably, the electromagnet is positioned at one end of the oil storage cylinder, which is far away from the guide assembly, and the magnetic pole of the electromagnet in the energized state faces opposite to the magnetic pole of the floating piston.

Thus, when the electromagnet is in a power-on state, the magnetic poles on the side, opposite to the floating piston, of the electromagnet are the same, and repulsion force is generated between the electromagnet and the floating piston due to homopolar repulsion, so that the floating piston applies acting force towards the direction of the connecting rod under the action of the electromagnet, and further the rigidity of the shock absorber is changed.

Preferably, the electromagnet comprises an annular first iron core, and a coil is wound on the outer circular surface of the first iron core.

Further, a second cylindrical iron core is further arranged in the oil storage cylinder, and the second iron core is coaxially arranged in the middle of the electromagnet.

Thus, the electromagnetic force can be increased by the iron core.

As another optimization, the electromagnets comprise a plurality of strip electromagnets arranged along the axial direction, the strip electromagnets are uniformly distributed along the circumferential direction of the oil storage barrel, and coils of the strip electromagnets are sequentially connected in series.

Furthermore, the electromagnets are arranged side by side along the axial direction of the oil storage cylinder.

Therefore, the axial distance between the floating piston and different electromagnets is different, so that the electrification of different electromagnets can be controlled or the current of different electromagnets can be adjusted according to the adjustment requirement, and the adjustment of the rigidity of the shock absorber is realized.

Preferably, the guide assembly comprises a guide seat embedded in the oil storage cylinder, a guide hole matched with the diameter of the connecting rod is formed in the middle of the guide seat, a bushing and an oil seal are arranged in the guide hole, and the connecting rod is arranged in the guide hole in a penetrating mode.

Further, sealing rings are arranged between the guide seat and the oil storage cylinder and between the guide hole and the connecting rod.

Furthermore, the floating piston is provided with at least two groups of sealing rings which are arranged side by side along the axial direction.

Furthermore, the bottom of the oil storage cylinder is also provided with an inflating nozzle.

To sum up, the utility model has the advantages of structural design is reasonable, and it is convenient to adjust, can adjust damping performance etc.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic sectional structure view of fig. 1.

Fig. 3 is a schematic sectional structure diagram of embodiment 2 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to examples.

Example 1:

as shown in fig. 1 and 2, a shock absorber for an intelligent suspension comprises an oil reservoir 1, a guide assembly 2, a piston assembly 3 and a connecting rod 4, wherein the guide assembly 2 is arranged at the open end of the oil reservoir 1, the piston assembly 3 is slidably arranged in the oil reservoir 1, and the connecting rod 4 telescopically penetrates through the guide assembly 2 and is fixedly connected with the piston assembly 3; the oil storage cylinder 1 is also internally provided with a slidable floating piston 5, the floating piston 5 is positioned at one side of the piston assembly 3 departing from the connecting rod 4, the floating piston 5 divides the space between the piston assembly 3 and the inner end of the oil storage cylinder 1 into an oil storage cavity and an inflation cavity which are completely isolated, and the inflation cavity is positioned at the bottom end of the oil storage cylinder 1. The floating piston 5 is made of magnetic steel with permanent magnetism, an annular electromagnet 6 is fixedly sleeved on the oil storage cylinder 1, the electromagnet 6 is axially positioned on one side of the floating piston 5, and the electromagnet 6 acts on the floating piston 5 under the power-on state to enable the acting force to face the piston assembly 3.

The guide assembly 2 comprises a guide seat 21 embedded in the oil storage cylinder 1, a guide hole matched with the diameter of the connecting rod 4 is formed in the middle of the guide seat 21, a bushing 22 and an oil seal 23 are arranged in the guide hole, and the connecting rod 4 is arranged in the guide hole in a penetrating mode. In order to improve the sealing performance of the guide assembly 2, sealing rings are arranged between the guide seat 21 and the oil storage cylinder 1 and between the guide hole and the connecting rod 4. The floating piston 5 is provided with at least two groups of sealing rings which are arranged side by side along the axial direction.

In addition, in order to fill gas into the gas filling cavity, the bottom of the oil storage cylinder 1 is also provided with a gas filling nozzle. The floating piston can be provided with a buffer function through the gas in the inflation cavity.

In this embodiment, the electromagnet 6 is located at an end of the oil storage cylinder 1 facing away from the guide assembly 2, and a magnetic pole of the electromagnet 6 in an energized state faces opposite to a magnetic pole of the floating piston 5. The electromagnets 6 are arranged in parallel along the axial direction of the oil storage cylinder 1 in number of 3.

As shown in fig. 2, the electromagnet 6 includes a first core having an annular shape, and a coil is wound around an outer circumferential surface of the first core. Meanwhile, a cylindrical second iron core 7 is further arranged in the oil storage cylinder 1, and the second iron core 7 is coaxially arranged in the middle of the electromagnet 6. Thus, the electromagnetic force can be increased by the iron core.

Adopt the utility model discloses a shock absorber can realize following control: for the driving working condition with good road condition, the electromagnetic force can be increased, and the hardness of the shock absorber is increased. And for the running working condition with poorer road conditions, the electromagnetic force can be reduced, and the hardness of the shock absorber is reduced.

Example 2:

as shown in fig. 3, the main difference from embodiment 1 is that, in this embodiment, the electromagnet 6 includes a plurality of strip electromagnets arranged along the axial direction, the strip electromagnets are uniformly distributed along the circumferential direction of the oil storage cylinder 1, and coils of the strip electromagnets are sequentially connected in series.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A shock absorber for an intelligent suspension comprises an oil storage cylinder (1), a guide assembly (2), a piston assembly (3) and a connecting rod (4), wherein the guide assembly (2) is arranged at the open end of the oil storage cylinder (1), the piston assembly (3) is slidably arranged in the oil storage cylinder (1), and the connecting rod (4) telescopically penetrates through the guide assembly (2) and is fixedly connected with the piston assembly (3); a slidable floating piston (5) is further arranged in the oil storage cylinder (1), and the floating piston (5) is positioned on one side, away from the connecting rod (4), of the piston assembly (3); the oil storage device is characterized in that the floating piston (5) is made of magnetic steel with permanent magnetism, an annular electromagnet (6) is fixedly sleeved on the oil storage cylinder (1), and the electromagnet (6) is axially positioned on one side of the floating piston (5) so that the acting force of the electromagnet (6) acting on the floating piston (5) in the electrified state faces the piston assembly (3).

2. Shock absorber for intelligent suspension according to claim 1, characterized in that said electromagnet (6) is located at the end of said oil reservoir (1) facing away from said steering assembly (2) and the magnetic pole of said electromagnet (6) in the energized state is oriented opposite to the magnetic pole of said floating piston (5).

3. The damper for intelligent suspensions according to claim 2, wherein the electromagnet (6) comprises a first core having a ring shape, and a coil is wound around an outer circumferential surface of the first core.

4. The damper for intelligent suspensions according to claim 3, wherein a second cylindrical core (7) is further disposed in the oil reservoir (1), and the second cylindrical core (7) is coaxially disposed in the middle of the electromagnet (6).

5. The damper for intelligent suspensions according to claim 2, wherein said electromagnets (6) comprise a plurality of bar-shaped electromagnets arranged in the axial direction, said bar-shaped electromagnets being uniformly arranged along the circumferential direction of said oil reservoir (1), the coils of said bar-shaped electromagnets being connected in series in sequence.

6. Shock absorber for intelligent suspension according to claim 2, wherein said electromagnet (6) is provided in plurality side by side in the axial direction of said oil reservoir (1).

7. The shock absorber for the intelligent suspension of claim 1, wherein the guide assembly (2) comprises a guide seat (21) embedded in the oil storage cylinder (1), the middle part of the guide seat (21) is provided with a guide hole matched with the diameter of the connecting rod (4), a bushing (22) and an oil seal (23) are arranged in the guide hole, and the connecting rod (4) is arranged in the guide hole in a penetrating mode.

8. The damper for intelligent suspensions according to claim 7, characterized in that sealing rings are provided between the guide seat (21) and the oil reservoir (1) and between the guide hole and the connecting rod (4).

9. Shock absorber for intelligent suspension according to claim 1, characterized in that said floating piston (5) has at least two sets of sealing rings arranged side by side in axial direction.

10. Shock absorber for intelligent suspension according to claim 1, characterized in that the bottom of said reservoir (1) is also provided with an air charging nozzle.